Incubator-heater.



G. H. STAHL.

INCUBATOB HEATER.

APPLICATION ILED JULY 13. 1909.

Fasern-.ed @11.10.1911.

2 SHEETS-SHEET 1.

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^ G. H. STAHL INGUBATOB HEATER.

I APPLIQATIOH PILE!) JULY 13. 1909.

v Patented Jan.10,1911.

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GE'ORGB H. STAHL, or- QUINGY, ILLINQIS.-

INCUBATOR-HEATER.

as l ,324,

Specification of Letters Patent.

Patented Jan. 10, 1911.

Application filed July 13, X909. Serial No. 507.381.

To all whom it may r'onccrn:

klle it known that I. lizouo: ll. Smm., a citizen of the lftuted States. residing"V at Quincy. lllinoisdiat'e invented a certain new' y and usct'ul improvementJ 1n Incubator-lIeat.- ers. of which the following is a full, clear. I

aud exact, description. `such as will enable others .skilled in the art to which it, apper- 5 tainsl to` make and use the same.

This invention relates to incubator heaters, and particularly to heaters` of that` type n cuhator or the building in which it -is located cannot catch on tire even it' the lamp of the'heater hecomes atire.

Another object is to provide an iincuhator heater'which is so constructed that the lamp cannot be filled while it is arranged in opera tive position. And still another object of my invention is to provide an incubator heater of simple construction that. is comact and which can he untnunftured at a ow cost. f

@ther Objects and desirable features of invention will he hereinafter pointed out.

Fi ure. 1 of the drawings is a side elevationa View of my impr-(wed incubator heater; Fig. f2 iS t horizontal sectional view sii taken on approximately the line 2. ot' l-`i; f. 1; Fig. Il is an enlarged vertical sectional View of th heater; Fig. -t is a horixontal .sectional view talten on approximately the line L -4 0f Vip". il; and. lwlg'. 5 is a detail .'t-l'iifrtl sectional `.'iew illustrating another niean` that can he. employed for retaining the lamp of theheater in operative position.

Referring to the drawings which illustrate the preferred form of my invention. designates an incubator of any preferred type, and B designates the casingof my iniproved heater. This casing l5 is preferaiiiy constructed of sheet. metal and the interior thereof is divided into a water reservoir l and a lmnp-compartmout h v means ot a horizontally disposed partition Il. lamp C is arranged inside of the compartment for heatingr the. water in the reservoir l. and

a supply pipe 4 and return pipe 5 establish communcatlon between thi` water reservoir 1 and the radiator of the incnhator so as to permit the heated water to pass from the i reservoir 1 into the radiato and thence return to thc radiator through the pipe The return pipe 5 is preferably arran'red inside of the supply pipe Ll, as shown in l ius. l and il. aud 'a hatlle ti is arranged inside of the reservoir adjat-ent the terminal of the pipe as shown in said tigfures. so as to cause the cooler water` which retni-nsthrough the pipe SL to pass downwardlyv into the bottom of l reservoir. rl`he hallle (l herein shown is ot' suhstantially channel shape. iu cross sectrou and is of less diana-ter than the supplv pipe vtso that it will not interfere with tlnx circulation of the water. the. upper end of said baille heine* closed and the lower eud thereof being open.

(lne or more of the .side walls ot' the lalnp compartment .2 are provided with pieces of v woven wire or screening T .so as to rentilate the lamp eom'partimnt and also prevent the thones from escaping therefrom in case the lamp heroines; atire. .short chitnnev pre' erahiy formed of metal, is connected to the hurner of lampt so as to protect the tiame from drafts` aud a`douhle chimney'. which extends through the water reservoir i. is arranged in alinemeut with the burner of lamp to carry oil' the products of corr.- hustion. Any suitahle type of double chimney can he used hut I prel'er to use thc cou- ;slruction herein .shown which consistsof au outer tubular-shaped member Sl having hoth ot' its` ends open, and an inner flue pipe 10 arranged inside oi' .said tulnilar-shaped meinher and provided adjacent its upper and lower ends with flanges ll and lL. .respectiycly. that terminate al the tulmlar-slniped memher S7. The upper end of the inner tlue or chimney 10 is normally closed hy' a damper lil connected to 'a rod l-l which is' coutrolled hy a thermostat l5 of any preferred type. and openings tt' and l? are formed in the lower and u -r ends: ot' the flue IU and the tuhuhzr-sliaped memher t. respmtivelv. so as to permit the products of combustion to pass through the openings i6 into the aunular .spare hetweeu said memhars and then escape through the openings 1T into the atmosphere when the damper lil is closed. \\'heu;th1 temperature in the ire .oator ses ahore a certain degree the rod ll will he .actuated and thus raise er open the damper' ibo llo

flue and the tubular-shaped member 9 of course, is to heat said member lo a high degree and thus v'quickly heat the water in the reservoir 1 that comes in direct. contact with the member 9, and the object. ot open ing the damper 13 when a certain temperature has been attained is to permit the products of combustion to escape to the atmosand partitiomas shown in Fi(r tubular-shaped member t) can be Secured to the. top all of the casing B and to the par- Alition 23 inside of said casing in any suitable manner but I prefer to solder saidparts together.` and also provide the member S) with beads 18 that bear against said top wall joints between said parts will even it the solder should melt. The upper edge of the short chimney 8 on the burner of the lamp is preferably flanged laterally at 8, and means is provided for holding the upper edge of said chimney in intimate engagement with the partition 3 inside offthe casing B so as to form a tight 'oint between said parts. The means shown in Fig. 3 for holding said parts in engagement with each other consists of a horizontally disposed shaft 19 journaled in the side walls of the casing B and prorided'with a bent portion or arm Q0 that beais against the under sido of the oil-reservoir iii of the lamp when said shaft is turned in one direction, said arm operating to move the lamp' upwardly and hold the flanged upperl edge of thel shoit chimney 8 tightly against the under side of the partition 3. If desired, a plate 22 can be :touted to the arm Q() on the shaft. 19 so as to prevent said arm from rubbing on the bottom of the oil-reservoir of the lamp, this plate 22, of course, being journaled on the arm 20 or connected thereto in such a manner that it can move relatively thereto when the shaft. 19 is turned in a direction to raise or lower' the lamp. The shaft 19 is provided at one end with a handle Q3, as shown in Figs. l and 4, and i retaining devioe'24 is secured to the side wall of the casing for-receiving said arm and locking it in osition. When it is desired to remove t e lamp from the lampcompartment 2, the handle 23 is grasped by the operator and moved into the position shown in dotted lines in Fig. 4, thereby causing the arm 20 to move downwardly into the position shown in dotted liliesV in Fig. 3.: The lamp C will, of course, move '65 downwardly'when the arm Q0 moves down- IS, so that the. not open upwardly, and when the lamp is moved downwardly far enough tor the upper edge of the chimney 8 to clear the lower end of the member 9 which projects into the lampcompartment, the lamp can be removed through the opening in the lamp-compartment. which the door .25 closes. This door 25 is provided at one ed e with a rms 26 that project laterally beyon( the casing B. and the casing is also provided with copera-ting laterally projecting arms 27 arranged in vertical alinemcnt with those on the door.

@ft vertically disposed rod 28 passes through said ooperating arms, as shown in Fig. 3, so as to pivotally connect said arms together, and a coiled spring 29 is mounted on said rod for moving the door into its closed positionfone end of said spring bearing against the casing and the opposite end bearing against the front face ot the door.

`The object ot hinging the door in the manner above described is to produce a construction in which the door forms the entire front wall of the casing, thus enabling a lamp to be used which is providedwith :in oil reservoir that 'extends the entire width of the casing B.` As soon asthe operator releases the door the spring 29 moves it into its closed position, and a spring catch 30 is secured to one of the side walls of the casing for locking the door in its closed position. If desired, the casing B can be. rovided with a strip or wall 25 that exten s across the lower edge ot the door opening, as shown in Fig. 3` so as to prevent the oil from runing out of the casing in case the lamp leaks. .Ifdesirech a shaft 19 provided with a cam or eccentric Q0 can be prtltvided for moving the lamp C upwardly in the lampcompartinent. this modification being illustrated in Fig. 5. 5' To overcome the possibility of the operator filling the lamp while itis arranged in operative position insidel of the lainp-conipartinent, I have constructed the lamp in such a manner that it can only be placed in the lan11i-compartment when the filling cap.

31 of the oil-reservoir is located at the -rear of the casing. One means for accomplishing this result consists of a bar 32 connected to the front wall of the oil-reservoir of the lamp and being of greater length than the width of the lamp-compartment so as to -forni lateral projections which ontaet with the front edges of the. side walls of the lanip-t-.ompartment when the 'lamp is' nrranged in operative osition,l as shown -in Fig. 4., The Afront e ges of the side walls l of the lamp-compartment are preferably provided with 'notches for receiving the bar 32 so that said bar will lie flush with the front edges oi said side wall and thus not interfere with the door of the lamp-conipartment. -ln view-of the -fact that the bar 3Q is longer thunthe width of the lampcompartment, it will he impossible for the operator to insert the lamp front end tirs-.t

' in the casing B, and as the filling cap 31 is located at the rear side of the oil-reservoir of the lamp it will he iniposslble for the operator to fill the lamp when it is arranged in cperative position.

The tilling cap of the oil-reservoir is preferably provided with a vent tube 33, and the burner of the lamp is detachably connected to a serew-threaded colla 3l which is secured to the oii-reservoir of the lamp by means of heads 34 and also solder, the up` per bead on said collar bearingl upon the I rovered by wire screeninglr or gauze which prevents any llames from escaping from .said casing. The various parts of the heater are connected together by combined beaded A and soldered punts so that said parts will not separate even it the solder melts. and as the oil-reservoir of the. lamp is so constructed that it can only be introduced into the lamp-compartment rear end first, it will be impcssible to place the lamp in the lampeompartxnent in such a manner that the tilling cap 3l can be removed to lill. the oilreservoir while the lamp is in operative position, thus reducing the liability ot an explosion caused by tilting the lamp when it is burning. The door of the lmnp-compartmentl is hinged in such a manner that it will not interfere with the lamp when said lamp is removed, and as the upper edge of the short metal chimney S on the lamp'burner is clamped tightly against the horizontal partition 3- inside-of the casing B, the llame from the lamp burner will beprotected from drafts.

The heater is compact and presents a neat and mnamental appearance, and as it comprises only a few sheet metal parts, it can be manufactured at a low cost.

Having thus described my invention, what I claim asnew and desire to secure by Letters Patent is:

1. An incubator heater provided with a metal casing that vforms a water reservoir and a lamp-compartment, a hinged door for Said lamp -compartment, an oil lamp arranged inside of Said lamp-compartment, and lateral projections on said fuel tank that engage the sides of said door opening and thus prevent the lamp from being arranged in the lamp-compartment. in such a position that. the filling opening in the fuel tank is near enough the door opening to permit said tank to be tilled.

2. An incubator heater comprising a easing provided with a partition that divides the interior space of the casing into a water reservoir and a lamp-compartment, a lamp arranged in said compat-'Intent and provided with a, short chimney whose upper edge bears against the under side of said partition, a chimney extending through the water reservoir for carrying ott the products of combustion, a manuallyoperated shaft pr jecting into said lamp-compartiment and provided with an arm for moving said lamp upwardly, and a we: plate journalcd on said arm for engaging the bottom of the fuel reservoir o the. lamp so as toprcvent the arm on said shaft from contacting directly with the bottom ol the reservoir. Y

3. In an incubator heater, a casing or housing formed of non-combustible material and provided with a water reservoir that eonnnunicates with pipes through which water circulates, a door in one of the side walls of said casing that forms a closure. for a lamp-compartment, a lamp arranged inside of said lampcompartment and provided with a short chimney that is adapted to bear against the under side of the water reser- Voir, means extending through said water reservoir and arranged in aline-ment with the chimney on said lamp for conducting the products of combustion to the atmosphere, a movable device inside of the lampcompartment for supporting said lamp, an operating member arranged outside of the casing for actuating said device so as to bodily raise and lower the lamp, and means col'ierating with said operating member for holding it in a certain position.

4. In al1-incubator heater, a housing or casing formed of sheet. metal and provided` with a partition that. divides the interior thereof into a water reservoir and a lampcompartment, a chimney extending through said water reservoir and communicating with said lamp-conil artment, a lamp arranged inside of said lamp-compartment, means for ventlating said lamp-compartment, a horizontally disposed shaft. )ournaled in said casing and provided with means for causing t-he lamp to bodily move upwardly or downwardly when said shaft is turned a handle on said shaft arranved outside of the casing, and means carried by the casing and coperating with said handle for locking said shaft in a certain position.

In testimony whereof I hereunto attix my signature in the presence of two witnesses, this 9th day of July 1909.

GEORGE H. STAHL.

Witnesses:

J. 0. GLENN, E. K. S'ronn. 

